According to the Pollinator Garden webpage, "Pollinators are essential to the preservation of our environment. The ecological service they provide is necessary for the reproduction of over 85% of the world’s flowering plants. Monarch butterfly populations have declined by more than 80% and many species of bumblebees are at risk of extinction. Loss of habitat, widespread use of pesticides, climate change, disease, and parasites are among the leading causes of these declines."
The garden was planted with guidance from the Xerces Society, and more information about pollinators can be found on their website.